Detailed cytogenetic analysis of three duck species (the northern pintail, mallard, and common goldeneye) and karyotype evolution in the family Anatidae (Anseriformes, Aves).

Galliformes and Anseriformes are two branches of the Galloanserae group, basal to other Neognathae. In contrast to Galliformes, Anseriformes have not been thoroughly researched by cytogenetic methods. This report is focused on representatives of Anseriformes and the evolution of their chromosome sets.

Supernumerary Chromosomes Enhance Karyotypic Diversification of Narrow-Headed Voles of the Subgenus Stenocranius (Rodentia, Mammalia).

The subgenus Stenocranius contains two cryptic species: Lasiopodomys gregalis (subdivided into three allopatrically distributed and genetically well-isolated lineages A, B, and C) and Lasiopodomys raddei. To identify karyotype characteristics of this poorly studied cryptic species complex, we used comparative cytogenetic analysis of 138 individuals from 41 localities in South Siberia and Mongolia. A detailed description of the L.

[The modeling of measures of prevention and shaping proper behavior in population as tool of averting redundant risks of morbidity and mortality as exemplified by COVID-19 pandemic].

The article considers issues of how population behavior impacts realization of state anti-epidemic measures and efforts to control pandemic. Materials and Methods. The methodology of the study is based on such methods as text analysis, elastic network and construction of regression equations.

[Diagnosis of benign laryngeal tumors using neural network].

The article describes our experience in developing and training an artificial neural network based on artificial intelligence algorithms for recognizing the characteristic features of benign laryngeal tumors and variants of the norm of the larynx based on the analysis of laryngoscopy pictures obtained during the examination of patients. During the preparation of data for training the neural network, a dataset was collected, labeled and loaded, consisting of 1471 images of the larynx in digital formats (jpg, bmp). Next, the neural network was trained and tested in order to recognize images of the norm and neoplasms of the larynx.

[Epidemiological features of laryngeal papillomatosis in adults in Moscow].

Objective: To evaluate the incidence of laryngeal papillomatosis (LP) and LP recurrence in adults and to determine the risk factors for the development of LP recurrence in adults in Moscow. To solve the tasks set, a survey of patients carried out, including the collection of complaints and anamnesis, a standard examination of the ENT organs, an assessment of the condition of the larynx, and a histological examination.

Material And Methods: We conducted a retrospective analysis of the case histories of 299 patients with LP observed and treated at the Sverzhevsky Research and Clinical Institute of Otorhinolaryngology in the period 2010-2020.